Intermittent grip device.



'PAIENTED MAR. 20, 1906. B. H. AHLANDBR.

INTERMITTENT GRIP DEVICE. APPLICATION nun 00124. 1902.

2 SHBBTS-SHEBT 1.

2556. FIV ITO? J7 WW No. 815,895. PATENTED MAR. 20, 1906.

' E. H. AHLANDER.

INTERMITTENT GRIP DEVICE.

I APPLICATION FILED 0OT.'4. 1902.

2 SHEETS-EHEBT 2.

all

UNITED sTATEs,

PATENT oFFIoE.

ERNST I1. AHLANDER, or CHICAGO, ILLINOIS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, To THE THOMAS WRIGLEY COMPANY,

-A CORPORATION OF ILLINOIS.

INTERMITTENTGRIP DEVICE.

' Specification of Letters Patent.

Patented March 20, 1906.

Application filed October 4,1902. sesame-125.894-

To ctZZ whom it may concern:

Be it known that I, ERNsT H. AHLANDER,

a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illi-.

I front face with an engaging groove in the;

wall of the recess of the open front face and arranged to coact therewith oppositely-dis posed pawls or dogs, each havmg an acting 'end to engage with the groove of the open. face of the disk; to arrange in juXtarelation to the open face of the disk a head carried by a slotted arm and having the actuating pawls or'dogs oppositely pivotedthereto; to give the arm of the head carrying the pawls or 2 5 dogs. a vibrating movement by which the pawls or dogs will be caused to alternately engage with and bereleased from engagement with the disk; to furnish a stop pawl or dog by means of which the disk is held against a 0 return movement during the movement of the actuating pawls or dogs into position for an advance of the disk, and to improve gen-.

erally the construction, arrangement, and

operation of the several elements which enter 3 5 into the intermittent grip mechanism as a whole.

The invention consists in the features of construction and combination ofparts here inafter described and claimed. a

In the drawings, Figure 1 is an elevation with some of the parts broken off and showing an arrangement of' support for the inter- Inittent grip device or mechanism; Fig. 2, a

sectional elevation of the intermittent grip device or mechanism, showing it in connection with a shaft and a bearing for the shaft; Fig. 8, a front face elevation of the intermittent grip device or mechanism with the arm carrying the stop pawl or dog broken offand showing the parts in their normal or released position for the actuating pawls or dogs;

Fig. 4, a front face elevation with the flange or rim of the disk partly in section and with the head carrying the actuating pawls or dogs broken off on one side and showing the position of the actuating pawls or dogs in advancing the disk, the stop pawl or'dog not being shown; Fig. 5, a top or plan view of the intermittent grip device or mechanism, show- Ing also the. shaft to be given a step-by-step advance and its bearing and the rocking arm by which the arm of the actuating pawls or dogsis oscillated; Fig. 6, a side elevation showing one arrangement of means for operatingthe rocking arm to oscillate the arm carrylng the actuatlng pawls or, dogs, and

Fig. 7 a detail showing the rod and cam'for 4 operating the rocking arm.

. The arrangement shown has the intermittent grip device or mechanism of the invention arranged for giving a step-by-step advance or rotation .to a shaft. The shaft A, is mounted in a bearing a, which is supported by a pendant a from a head 0 which can be attached by a bolt 0, or otherwise to a platform, bed, or other support. attached to one end of the shaft A in any suitable manner, so that the advance or forward rotation of the disk will advance or rotate the shaft. 1 The face of the disk B has a recess or chamber 1), forming a rim or flange The disk B is b, in which is a V-shaped groove 6 extend ing circumferentially around the flange on its ing on opposite sides ears 0, and each ear has pivoted thereto by a suitable pin or pivot d a pawl or dog D, each pawl or dog having a V- shaped acting end (1 to enter the V-shaped groove b in the wall of the rim or flange b of the disk for each dog when thrown forward to have'its acting end d engage the walls of the groove and move the disk forward intermittently] The head O is a part of or fixedly attached to an arm E, having therein a longitudinal slot e, into which slot is entered a ballf, attached by a stem f to a head F,;which head can be adjusted fore and aft in its position relative to the arm E, and thereby adjust the throw of the arm E to agreater orless extent of 45 I pitman or rod to properly force down the pitthrow. The head F is slidable on a rod G, which rod has in one side thereof a longitudinal groove g, into which enters the end of a set-screw g, the stem of which passes through the head, so that the head F is adjustable on the rod G and when adjusted is locked and fixedly held on the rod by the set-screw g, so as to maintain its adjusted position The rod G passes through the end of a rocking arm H and is held in the arm by a set-screw h or otherwise. The arm H at its rear end is pivotally mounted on a stud or journal-pin h on the end of a rod or support H, extending out from the journal box or support of the shaft A in the arrangement shown. The arm H adjacent to the end which carries the rod G has a stud or pivot i entered into the end of a rod or pitman I, which rod stands vertical and at its upper end is entered into a socket of a stirrup J, the slot y" of which stirrup receives thereinto the end of a drivingshaft. The driving-shaft has fixed thereto adjacent to the stirrup J a cam K, having a projected curved face 76 and a depressed curved face joined together by curved ends k and forming the acting face of the cam, and this acting face of the cam is in engagement with a roller j mounted on a journal pin or pivot j projecting out from the base or socket end of the stirrup, so that as the cam revolves the rod or pitman I will be depressed by the engagement with the roller of the projected curved face 7c of the cam and will be permitted to rise when the roller is engaged with the depressed face 7c of the cam. The pitman or rod Iin the arrangement shown is raised or lifted by a coiled spring L, one end of which is attached to a pin or eye Z on the pitman or rod and the other end of whichis attached to a pin or eye Z on one of the standards supporting the driving-shaft for the cam. The driving-shaft M for the cam has the hub of the cam fixedly secured thereto by setscrews 76 which enables the cam to be properly adjusted to coact with the roller on the man or rod to move the rocking arm for actuating the intermittent grip device or mechanism to give an advance movement or rotation to the disk. The shaft M can be driven by a pulley or a driving-wheel M from any suitable source of power, and, as shown, the shaft is mounted in suitable journal-boxes on the upper ends of standards m, each standard at the lower end having a flange m, through which passes bolts m attaching the standards to a table, bed, or support N, to which in the construction the bearing a for the shaft A is attached, and this-table Nin the arrangement shown has a slot n for the passage of the vertical rod or pitman I, so as to bring its upper end in proper relation to the cam K for the cam to perform its work. A spring 0, attached at one end toa pin or stud 0 on the end of the rod G and attached at its other end to a pin or stud 0 on a cross-rod m between the standard M, assists the spring Iiin returning the pitman or red l to its raised or elevated position and also serves to maintain the rod G against any twist from the action of the spring L, thus retaining the rod (1 in a level position practically, so that the hallfof the head F will act properly at all times.

A stop-pawl or (log P, similar in eonstruction to the pawls or dogs l) and having an acting end corresponding to the acting end (I of the pawlsor dogs D and like the acting ends d entering into and engaging with the walls of the V-shaped groove 1) of the disk, is pivotally attached to a bracket-arm Q by a suitable pin or pivot p, as shown in Figs. 1 and 3. The pawl or dog P operates to prevent any backward movement of the disk with the return of the actuating pawls or dogs D to their normal or starting position and so that during the return of the pawls or dogs D to normal position the disk will remain stationary. Each pawl or dog D has connected thereto one end of a spring d", the other end of which in the case of the upper dog is connected with the arm E and the other end of which in the case of the lower dog is connected to the edge of the head C, as shown in Figs. 1 and 3. These springs d are for the purpose of drawing each pawl or dog out of operative position With the downward movement of the vibratable arm E, so that the pawls or dogs will not operate and the advance of the disks will not take place; but with the upward movement of the vibratable arm E the springs allow each pawl or dog to be forced outward into engagement with the disk to advance the disk. The pawl or (log P has connected therewith one end of a spring 1), the other end of which spring is connected to the bracket-arm Q, and this spring operates to draw the pawl or dog P into position to engage with the disk B and prevent backward rotation thereof with the return movement of the pawls or dogs D and at the same time does not interfere with the advance of the disk B in the forward throw of the actuating pawls or dogs.

The operation is as follows: The upward movement of the pitman or rod I raises the forward end of the rocking-arm H and with it the rod G and the head F, carried thereby, and with the raising of the head F the vibratable arm E is raised through the engagement of the ball f with the slot 0 of the arm. This upward throw of the vibratable arm E forces the actuating pawls or dogs D each into engagement with the wall of the V-shaped groove in the disk and forces the disk forward to the limit of the upward throw of the vibratable arm, and with the return or downward throw of the vibratable arm the springs act and hold the dogs out of engagement the vibratable arm as it is raised at its outer end moving the head or pivoted end 0 of the arm or lever'E for the pawls or dogs D to be forced outward and wedge themselves in the groove of the circumferential rim or flange of the disk D and between such rim or flange and the pivot d for each pawl or dog to the ears of the head, and inasmuch as the pawl or dog cannot pass the center of itspivot it must become locked, and with the vlbration I of the arm E such locking turns the disk B in a forward direction, givmg a corresponding intermittentrotation to the shaft A or other part connected with the intermittent grip device or mechanism. The down throw of the vibratable arm or lever at its free end rocks the head 0 in the opposite direction, allowing the pawls or dogs D to fall clear of engagement with the rim of the disk and permitting the vibratable arm or lever to descend without imparting rotation to the disk.

What I regard as new, and desire to secureby Letters Patent, is I 1. In an intermittent grip device, the combination of a disk having a peripheral rim on one side face, a vibratablearm loosely mounted adjacent to the rim-face of the, disk, a air of dogs carried by the vibratable arm an entered into the recess of and engaging with the interior face of the peripheral rim of the disk in one direction of movement of the vibratable arm and disenga ed from the interior face of the rim of the disk in the opposite direction of movement of the vibratable arm, a head in adjustable engagement with the vibratable arm, and a rising and falling rod carrying the head and oscillating the vibratable arm for engaging and disengaging thev pawls and intermittently revolving the disk, substantially as described.

2. In an intermittent grip device, the combination of a disk having on one side face a peripheral rim, avibratable arm loosely mounted on the shaft adjacent to the rimface of the disk, a pair 'of dogs carried by the vibratable arm and entered into the recess of and engaging with the peripheral rim of the disk in one direction of movement and disengaged from the rim of the disk in the opposite direction of movement, a stop-dog engaging and holding the disk against a return movement, a head engaging the vibratable arm, and a rising and falling rod carrying the head and oscillatin the vibratable arm for intermittently revo ving the disk, substantially as described. w

3. In an intermittent grip device ,the dombination of a shaft, a disk fixed on, the shaft, and having a peripheral rim on one side face,

a vibratable arm loosely mounted on the ing the sh f apairrof dog ca r e by the vibratable hrmandengagi g with the in rio .fahh h peripheralrim o the disk one direction of movement and disengaged vfrom the: interior fa efiof t periphera rim 'th disk in he QpP i d r ction o m m lh-t, a h a ag g h v br e m nim ng and a l IO carrying the head, a rocking arm in which the rising and falling rod is mounted, and means for rocking the arm, substantially as described.

4. In an intermittent grip device, the combination of a shaft, a disk fixed on the shaft, a vibratable arm loosely mounted on the shaft, a pair of dogs carried by the vibratable arm and engaging the disk in one direction of movement and disengaged from the disk in the opposite direction of movement, a head engaging the vibratable arm, a rising and falling rod carrying the head, a rocking arm in which the rising and falling rod is mounted, a pitman or rod, a cam engaged with the pitman or rod, and a revoluble shaft carrying the cam, substantially as described.

5. In an intermittent grip device, the combination of a shaft, a disk fixed on the shaft, a vibratable arm loosely mounted on the shaft, a pair of dogs carried by the vibratable arm and engagin the disk in one direction of movement and isengaged from the disk in the opposite direction of movement, a head en aging the. vibratable arm, a rising and fal ing rod carrying the head, a rocking arm in which the rising and falling rod is mounted, a pitman or rod connected with the rocking arm, a roller on the pitman or rod, a cam "engaging with the roller, and a revoluble shaft carrying the cam, and means for returnpitman or rod, substantially as described. i r

6.. In an intermittent grip device, the combination of a shaft, a disk fixed-on the shaft, a vibratable arm loosely mounted on the shaft,'a pair of dogs carried by the vibratable arm andengagin the disk in one direction of movement and 'sengaged from the disk in the opposite direction of movement, a head engaging the vibratable arm, a rising and falling rod carrying the head, a rocking arm in which the rising and falling rod is mounted, a pitman or rod connected with the rocking arm, a roller on the pitmanor rod, a cam engaging with the roller, a revoluble shaft carrying thecam, and aspring for returning the pitman or rod, substantially as described. 1

arm and engagin the disk in one direction of movement and 'sengaged from the disk in the opposite direction of movement, a head en aging the vibratable arm, a rising and fal ing rod carrying the head, a rocking arm in which the rising and falling rod is mounted at one end with the rising an (1 falling rod ed, apitman orrodconneetedwith the rocking and having a fixed connection at its other arm, a roller on the pioman or rod, a, cam enend, substantially as described. gaging with the roller, a revoiubie shaft oar- ERNST H. AHLAN DER.

5 rying the cam, a, spring connee zed at one end. Vfitnesses:

with the pitman or rod and having fixed. oon- THOMAS WRIGLEY, nection at its other end, and a spring connect- I OSCAR W. BOND. 

